【答案解析】根据公式

计算各滑块的抗滑力:

=10000×cos40°×tan19°+18×100
=10000×0.766×0.344+1800
=4435kN

=50000×cos35°×tan20.5°+20×120
=50000×0.8192×0.3739+2400
=17715kN

=45600×cos22°×tan18.5°+18×100
=45600×0.9272×0.3346+1800
=15947kN

=15000×cos20°×tan17°+15×80
=15000×0.9397×0.3057+1200
=5509kN

=14500×cos23°×tan17°+15×90
=14500×0.9205×0.3057+1350
=5430kN
